Hi All, I found the site googl'ing the S5 IP242A counter module, I found an old thread with another problem and was hoping maybe someone can help me out with this one. I am trying to add a sixth counter to above mentioned module without much success... here are some details on the situation: The module is already working on the plant with a S5-135 CPU928, using FB178, page frame adressing, counters 1-5 being used. We now need to add a sixth - a decoder - measuring the total product throughput. I have copied the program elements from the existing program to use in testing before we try to implement. During parametrization of the counters I get bit 7 in the MELD (message byte), a group error bit. The value in the error byte is zero, but in the F-NR byte the value 9 is present. According to the manual it means acknowledgement delay, but no further details as to how or what can be done to solve the problem Any ideas anyone?